DOC 6501_Release V
ATS-6501 Users Guide
108
Cable losses cannot exceed 10dB when using the antenna supplied with the ATS-
6501.
• Antenna Failure
o Loss of Power. Antenna requires 5-18Vdc to operate properly. Disconnect the cable
from the antenna and measure the DC voltage between the center pin (+) and shield (-
) to ensure the antenna operating voltage is present. If not, check the cable continuity
and DC Power Source.
Note: The DC Power source may be a BIAS Tee or the ATS-6501. Ensure the
antenna voltage is available from the proper source.
o Failed Antenna. If the DC Power source is available and at the proper level and the
antenna cable continuity is good, replace the antenna.
• User entered an invalid position
o GPS Tracking indicator is OFF. Enter the correct position for the antenna. Use the
status health:gps_error command to look at the status of the GPS hardware.
6.2.4 Internal Clocks
If you suspect there may be an issue with the internal clocks use the status health and status
reference commands to look at the status of the internal clocks.
Note: The example below has been edited to show the relevant fields in the system health status
for the clocks.
ATS-6501>status health
[clock_freq_step]
[active] false
[occurrences] 0
[clock_phase_step]
[active] false
[occurrences] 0
[clock_starvation]
[active] false
[occurrences] 0
[clock_steer]
[active] false
[occurrences] 0
[clock_wander]
[active] false
[occurrences] 0
ATS-6501>status reference
[frequency]
[external]
[communications] N/A
[locked] true
[signal] present
[internal]
[locked] true
[timescale]
[clocks]
[Cesium1]
[1_pps_present_slot_4_port_1] true
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